Stone Heart Shape Pendants with Gold Clasps

Selling a set of 4 Stone Heart Shape Pendants with Gold Clasps in good condition 1 of the small hearts has a chip in it and 1 is missing a clasp. all sold as is. the biggest of the hearts is about 1/2" x 1/2" and the other 3 are about 1/4" x 1/4" I think the small 3 are known as Brown Clam Hearts but not sure what the bigger one is.